Description
Upgrade your 2016 Chevrolet Silverado or GMC Sierra Duramax with the Large Bore-HD 4" 409 Stainless Steel DPF-Back Exhaust System by aFe Power. Designed for maximum performance, aggressive style, and a perfect fit, this exhaust system is engineered to deliver superior airflow, enhanced horsepower, and a commanding dual-exit look.
Premium Construction for Maximum Flow
Crafted from 4" mandrel-bent 409 stainless steel tubing, the Large Bore-HD exhaust ensures low-turbulence exhaust flow, increasing torque and reducing EGTs. The system incorporates a mitered merge collector for smooth transitions and optimized performance under high-load conditions.
Dual Rear Side Exit & Aggressive Styling
This exhaust features dual 6" polished 304 stainless steel slash-cut tips with laser-cut aFe Power badges, combining durability with a bold, professional appearance. A bolt-on support bracket stabilizes the driver-side tailpipe, while OE-style bayonet hangers maintain a secure fit during high vibration and extreme heat.
Quick & Hassle-Free Installation
Designed to use all factory mounting locations, this system provides a bolt-on installation with minimal effort. It fits perfectly with the spare tire intact and requires no modifications for most cab/bed configurations, offering a plug-and-play upgrade for your Duramax.
Single-to-Dual Conversion
Convert your standard single exhaust to a dual-exit configuration for improved airflow, performance, and an aggressive appearance.
Vehicle Fitment
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Extended Cab/Short Bed, 6.6ft Bed, 143.5” Wheelbase
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Crew Cab/Short Bed, 6.6ft Bed, 153.7” Wheelbase
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Extended Cab/Long Bed, 8ft Bed, 158.1” Wheelbase
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Crew Cab/Long Bed, 8ft Bed, 167.7” Wheelbase
Note: Cutting may be required for some cab configurations.
Emissions Compliance
No CARB EO# is required, making this system compliant for sale in most regions.
Made in the USA
All aFe exhaust systems are designed and manufactured in Corona, California, ensuring premium quality and long-lasting durability.
Upgrade your Duramax with the Large Bore-HD 4" 409 Stainless Steel DPF-Back Exhaust System, the perfect combination of performance, fit, and aggressive style.
